MEDICATION INJECTING DEVICE AND ITS ACCESSORIES

Abstract: The present invention refers to a device aiming the administration, in humans and animals of therapeutical or diagnostic fluids, with the device already containing the fluid for injection, ready for use, eliminating the need for glass vials, ampules and conventional syringes. The device is constitued, basically, by a recipient (1), preferably made of plastic material, flexible, neutral not reacting with the fluid, pressure resistant, non elastic or little elastic for some applications, internally coated by a teflon film, with a conical or cylindrical shape in an upper view, oval in transversal cut-off, containing at its tapered portion (5) the terminal (6) with the fitting connection (7) and the tubular section (8) with the wing (9), heat sealed to the wall (3), reinforced by a pressure ring. For low injection volumes, the recipient (1) is placed between the plates (13) and (14), with the anterior tappered end of the upper plate (13) fitted under the upper catcher (18) fixed, by the pins (19) and (20), to the lower catcher (26) made part of the lower pressing plate (14). At the extremity of the upper pressing plate (13) there is the scale portion (21) with the injected volume indicator (22) that moves in the slot (23). Between the scale portion (21) and the extremity of the lower plate (14) it is placed the arm (27) connected to the foil (28).

Description: Descriptive Report of the Patent of In vention: "MEDICATION INJECTING DEVICE AND ITS ACCESSORIES'.' The present invention refers to a de¬ vice intended to inject, in humans and animals, solutions for therapeutic or diagnostic purposes, preferably, with the device already containing the fluid for injection, re ady for use, disposable, eliminating the need for the pre sent glass vials and bottles and conventional syringes. Presently, injectable solutions, inc- eluding pharmaceuticals and contrast media, are available being contained in glass vials, transferred, at the time of administration, to glass or plastic syringes. Syringes already containing contrast media and some pharmaceutic¬ als, ready for use, are also available. Another available device is the pressure injection pistol, usually for vac¬ cines administration thru the skin. Aiming to present a more efficient al¬ ternative, easier to use and more cost effective, to the conventional systems, by means of an injecting device al- ready containing the fluid simplifying procedures, the present medication injecting device and its accessories has been developed. The invention can be better understood with the detailed description of the attached schedules, being: The figure 1 illustrates the basic el¬ ement of the new device, being constituted by the main bo dy of the recipient (1) containing the injectable solu¬ tion, formed by molding or, preferably, by heat sealing of two plastic films, with a conical shape in an upper view, and oval in a transversal cut-off (cut-AA-) at its larger volume portion (2) , whose wall (3) is made, prefer¬ ably, of neutral plastic material, not reacting with the fluid for injection, flexible, pressure resistant, prefer- ably non elastic, or a little elastic for some applicat¬ ions, with a teflon inner coating (4) as needed, separating the fluid and the wall, increasing safety. At its tappered extremity (5) the recipient (1) is fixed, e.g. by heat se aling, to the terminal element (6) containing the fitt- ing connection luer-lock (7) , and the tubular section (8) with the wing (9) to be fixed to the inner face of the tappered wall (5) , with the tubular section (8) having its proximal end (12) (cut-BB-) preferably vertically depress; ed and laterally enlarged to conform to the container (1) depression at the time of fluid ejection. The external co ver (10) (cut-CC-) protects and maintains the fluid steri lity before use. At the luer-lock (7) , the standard nee¬ dle (11) is fitted. In the figure 2 it is illustrated an upper view of the injecting device with accessories for injection of small volumes of fluid, in which it can be observed the recipient (1) installed between two pressing plates (13) upper and (14) lower, fixed to the external surface of the said recipient (1) that contains, at its upper external surface, the tappet (15) fitted in the o- rifice (16) of the upper pressing plate (13) , tappered, with its narrowed end (17) fitted under the upper catcher (18) , (cut-DD-) , with the fitting pins (19) and (20) that maintain the fixing of the upper and lower catchers. In the figure, it is also shown the scale (21) at the oppos¬ ite end of the upper pressing plate (13) , with the indic¬ ator (22) that moves in the slot (23) . Figure 3 illustrates a lateral cut¬ off view of the injecting device with accessories to inject small volumes of fluid in which it can be observed the fluid container (1) placed between the upper (13) and lower (14) pressing plates, where it can be noted the ta£ pets (15) and (24) respectivelly in the upper and lower external surfaces of the recipient (1) , fitted in the o- rifices (16) and (25) in the upper and lower pressing pla tes. It can also be noted that the lower catcher (26) is preferably, part of the lower pressing plate (14) .Between the scale portion (21) of the upper plate (13) and the ex tremity of the lower plate (14) it is placed the arm (27) connected to the foil (28) acting as a spring producing a slight force on the plates (13) and (14) , in an approach¬ ing way to prevent air suction after needle adaption. In the figure 4 it is illustrated the recipient (1) of the injecting device, with a suggested shape for large volumes to be administered by infusion or biphasic methods, containing at its larger volume portion (2) , the support (29) with the orifice (30) for hanging up. In this administration method, to the luer-lock con¬ nection (7) it is fixed, preferably, the terminal (31) , fixed to the valve (32) for flow control, placed at the upper part of the dropping chamber (33) , and to this, it is fixed the tubing (34) up to the needle (11). Completing the device it is showed the air filter set (35) , contain¬ ing the needle (36) to be inserted in the flexible reci- pient (1) and the container (37) . The luer-lock (7) set fixing to the container (1) is reinforced by a metal ring (38) . Figure 5 illustrates a lateral view of the basic flexible recipient (1) of the new device, with a suggested shape for large volumes injection, by bolus, requiring higher pressures, employing the hands instead of fingers, placed between two pressing elements (39) upper and (40) lower, that can be actuated with one of the hands. In the figure, it is observed that the recipi- ent (1) is positioned between the plates (41) and (42) , glued to the ergometrie elements (43) and (44) , whose set compose the elements (39) and (40) . In its upper portion, it is observed that the upper element (30) contains the pin (45) inserted in the guide (46) , also with a fixing function. The upper pressing element (39) contains, yet, the scale set (47) for indication of the injected volume, containing the body (48) fixed to the upper plate (41) . Completing the set there is the angled hand (49) attached at its lower extremity, to the bearing (51) in contact with the lower plate (42) . At its angled portion,the hand rotates around the pin (50) , containing the return spring (52) . The luer-lock (7) contains (cut-EE-) , in the case of the large volumes recipient (1) the semi-free external ring (53) , able to rotate freely, with the cover (54) to keep the air-tightness and sterility of the content, ex¬ ternally threaded and with an internal tubing in intimal contact with the tip tube (55) . Optionally, the fluid can be kept at body temperature of 379C, by means of electric coils (56) and (57) , plane and thin, respectivelly adher- ed to the external faces of the pressing plates (41) and (42) , receiving electric power by the wire (58) . In the figure 6 it is showed an upper view of the device for injection of large volumes of fluid, in which the upper pressing element (39) has an an terior crotched extremity (59) , containing, at each side, the pins (45) and (60) , inserted in the guides (46) and (61) , part of the inferior element (40) . The scale mechan ism (47) completes the set, indicating the injected volu¬ me. The plane and thin coils (56) and (57) , respectivelly adhered to the internal faces of the pressing plates (41) and (42) , permit keeping, optionally, the temperature of 379C, by means of the electric power feeding by the wire (58) .

Claims: CLAIMS 1 - MEDICATION INJECTING DEVICE AND ITS ACCESSORIES, characterized by being constituted by the main recipient (1) containing the fluid for injection, pre ferably with a conical or cylindrical shape in an upper view and oval in transversal cut-off, with the larger vo¬ lume extremity (2) , opposite to the fluid ejection end, whose wall (3) is made, preferably, of neutral plastic ma terial, not reacting with the fluid, flexible, pressure resistant and non elastic or little elastic for some ap¬ plications, internally covered by a teflon coating (4) se parating the fluid and the wall, increasing safety.At its tappered end (5) the recipient (1) is heat sealed to the terminal element (6) , containing the fitting connection luer-lock (7) and the tubular section (8) with a wing (9) having its proximal end (12) vertically depressed and ho¬ rizontally enlarged. The fixing of the wall tappered end (5) and the tubular section (8) can be reinforced by a ring (36) . The cover (10) maintains the fluid sterility before use. At the luer-lock terminal (7) the standard in jecting needle (11) is fitted for fluid administration. 2 - MEDICATION INJECTING DEVICE AND ITS ACCESSORIES, according to claim 1, characterized by the fact that, for small volume injections, the recipient (1) be installed between two pressing plates (13) upper and (14) lower, fixed to the upper and lower external sur faces of the said recipient (1) by tappets (15) and (24) respectivelly fixed into the orifices (16) and (25) in the upper (13) and lower (14) pressing plates. At its ante- rior end the device has two catchers (18) upper and (26) lower, for handling at the time of injection to get firm¬ ness during the needle insertion, with the lower catcher being made, preferably, part of the lower pressing plate (14) . At the upper pressing plate (13) extremity there is the scale portion (21) with the injected volume indicator (22) that moves in the slot (23) . Between the scale por¬ tion (21) and the extremity of the lower plate (41) it is placed the arm (27) connected to the foil (28) . 3 - MEDICATION INJECTING DEVICE AND ITS ACCESSORIES, according to claim 1, characterized by the fact that, for large volumes infusion, the recipient (1) contains, at its larger volume end (2) the support (29) with an orifice (30) . To the terminal luer-lock (7) it is fixed, for use, the terminal (31) , externally thre- aded fixed to the flow control valve (32) , placed at the upper part of the dropping chamber (33) , and to this, it is fixed the tubing (34) up to the needle (11) . The de vice is composed also by the air filter set (35) with the container (37) and the needle (36) . 4 - MEDICATION INJECTING DEVICE AND ITS ACCESSORIES, according to claim 1, characterized by containing, for large volume injections, the flexible re¬ cipient (1) installed between two pressing elements (39) upper and (40) lower, formed by pressing plates (41) and (42) glued to ergometric elements (43) and (44) . At the anterior portion of the upper element (39) there are the pins (45) and (60) inserted in the guides (46) and (61) made part of the lower element (40) . At the upper element (39) there is the scale set (47), containing the body(48) fixed to the upper plate (41) , with the angled hand (49) attached, at its lower extremity, to the bearing (51) in contact with the lower plate (42) . At its angled portion, the hand rotates around the pin (50) , containing the re¬ turn spring (52) . The luer-lock(7) contains the semi-free external ring (53) able to rotate freely, with the cover (54) externally threaded and with an internal tubing in intimal contact with the tip tube (55) . The device can contain electric coils (56) and (57) , plane and thin, res pectivelly adhered to the external faces of the pressing plates (41) and (42) , receiving electric power by the wi¬ re (58).

Inventors: RODRIGUES CLARO JORGE ANTONIO, RODRIGUES CLARO, JORGE, ANTONIO
Applicants: RODRIGUES CLARO JORGE ANTONIO, RODRIGUES CLARO, JORGE, ANTONIO
Application year: 1994
Main classification: A61M5
IPC codes: A61M5